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annotate druntime/src/compiler/dmd/tls.S @ 1458:e0b2d67cfe7c

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Added druntime (this should be removed once it works).
author Robert Clipsham <robert@octarineparrot.com>
date Tue, 02 Jun 2009 17:43:06 +0100
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1458
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1 /**
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2 * Contains support code for thread-local storage.
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3 *
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4 * Copyright: Copyright Digital Mars 2008 - 2009.
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5 * License: <a href="http://www.boost.org/LICENSE_1_0.txt>Boost License 1.0</a>.
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6 * Authors: Walter Bright
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7 *
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8 * Copyright Digital Mars 2008 - 2009.
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9 * Distributed under the Boost Software License, Version 1.0.
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10 * (See accompanying file LICENSE_1_0.txt or copy at
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11 * http://www.boost.org/LICENSE_1_0.txt)
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12 */
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13 #if linux
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14
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15 /* The memory between the addresses of _tlsstart and _tlsend is the storage for
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16 * thread-local data in D 2.0. Both of these rely on the default linker script
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17 * of:
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18 * .tdata : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
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19 * .tbss : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
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20 * to group the sections in that order.
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21 *
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22 * Sadly, this does not work because ld orders .tdata after .tdata.*, despite
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23 * what the linker script says.
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24 */
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25
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26 .file "tls.S"
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27
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28 .globl _tlsstart
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29 .section .tdata,"awT",@progbits
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30 .align 4
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31 .type _tlsstart, @object
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32 .size _tlsstart, 4
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33 _tlsstart:
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34 .long 3
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35
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36 .globl _tlsend
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37 .section .tcommon,"awT",@nobits
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38 .align 4
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39 .type _tlsend, @object
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40 .size _tlsend, 4
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41 _tlsend:
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42 .zero 4
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43
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44 #endif